CN202254977U - Installed and welded plate-fin air preheater - Google Patents
Installed and welded plate-fin air preheater Download PDFInfo
- Publication number
- CN202254977U CN202254977U CN2011203674756U CN201120367475U CN202254977U CN 202254977 U CN202254977 U CN 202254977U CN 2011203674756 U CN2011203674756 U CN 2011203674756U CN 201120367475 U CN201120367475 U CN 201120367475U CN 202254977 U CN202254977 U CN 202254977U
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- Prior art keywords
- fin
- plate
- heat exchange
- air preheater
- thin plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
Abstract
The utility model discloses an installed and welded plate-fin air preheater, comprising a shell, a smoke inlet, a smoke outlet, an air inlet and an air outlet, a heat exchanging element and a sealing structure in the shell, wherein the heat exchanging element includes multiple plate-fin heat exchanging units, wherein the heat exchanging unit includes a thin plate and fins respectively welded on two sides of the thin plate; the plate-fin heat exchanging unit is formed by parallel buckling two opposite thin plates and sealed connecting the sealing surfaces of the edge end parts via a sealing bolt and/or a welding line. Compared with the prior art, the utility model overcomes the problem of the current plate-fin air preheater that has bad sealing ability on large amount of high temperature resistant smoke, increases the sealing ability on high temperature resistant smoke and improves the heat exchanging efficiency by installing and welding the fin on the thin plate and sealing the sealing surface via the sealing bolt and/or welding line, and provides a basis for the research of the plate-fin heat exchanging unit with large area, narrow gap and big flow under a high temperature condition and relieves the structure weight.
Description
Technical field
The utility model relates to the air preheater technology in the mechanized equipment engineering, particularly relates to being used for petrochemical industry, coal chemical industry, chemical fertilizer industry, air conditioner refrigerating, the special-purpose a kind of assembly welding plate-fin air preheater of electric power facility heat exchange.
Background technology
The plate-fin air preheater is because it has the characteristic of anti-flue gas dew point corrosion, therefore usually is being used for substituting tubular air preheater in old mechanized equipment engineered.
Mostly plate-fin air preheater of the prior art is cast sheet wing regenerative air heater; Promptly utilize the one-time formed plate-fin air preheater of casting; The flexibility of its material has determined this product can adapt to the condition of work of various high temperature corrosions; Compare the air preheater of common plate-fin, bundled tube and heat pipe-type, on conductivity of heat, corrosion-resistant, high temperature resistant, anti-wear performance, bigger advantage is arranged.
Common cast sheet wing regenerative air heater, as shown in Figure 1, its structure includes housing 2, smoke inlet 1, exhanst gas outlet 7, air intake 6, air outlet slit 4, and is arranged at heat exchange element 3 and hermetically-sealed construction 5 in the housing 2.Its course of work is: flue gas gets into from smoke inlet 1; Discharge to exhanst gas outlet 7 after heat exchange element 3 heat exchange heat releases from smoke inlet 1; Air gets into from the air intake 6 of housing 2 sidewalls, discharges from air intake 6 air outlet slit 4 to housing 2 sidewalls after heat exchange element 3 heat exchanges heat absorption.Its heat exchange element 3 has generally included a plurality of plate wing heat exchange units; The fin that plate wing heat exchange unit includes the substrate of integrally casting moulding and is arranged at substrate, plate wing heat exchange unit is by the setting of two substrates alignment snapping, and respectively through the be tightly connected sealing surface of its end, edge of sealing bolt.
Its operation principle is: still get into cast sheet wing regenerative air heater with the flue gas of low temperature exhaust heat at a high speed from the smoke inlet 1 that the housing 2 of cast sheet wing regenerative air heater is provided with; After plate wing heat exchange unit heat exchange heat release, discharge from the exhanst gas outlet 7 that the housing of cast sheet wing regenerative air heater 2 is provided with.And the flow process of air side is divided into two journeys, compresses at a high speed from the air intake 6 of cast sheet wing regenerative air heater sidewall, and level flows to cover plate 8 backs and accomplishes a journey; Continue to flow along cover plate 8 with 90 ° of turnovers then; Flow to the air outlet slit 4 of cast sheet wing regenerative air heater sidewall with level after 90 ° of turnovers again and flow out, accomplish second journey, in this two journey; Air slave plate wing heat exchange unit heat exchange heat absorption, the flow direction of its air is vertical each other with the flow direction of flue gas.
Though the low temperature resistant flue gas dew point corrosive power of above-mentioned cast sheet wing regenerative air heater is better; But also have following problem: the heat exchange area of heat exchange unit is less than normal; Compare with tubular air preheater; Seeming, overall volume is big, weight is also very heavy, and economic performance is not outstanding, and its sealability in the high-temperature flue gas operating mode is relatively poor.Make that thus the advantage of in the transformation of old device, using above-mentioned cast sheet wing regenerative air heater to substitute tubular air preheater is not very obvious.
Therefore,, a kind of air preheater technology is provided, has very far-reaching and significant meaning in field of engineering technology to the weak point of above-mentioned prior art.
The utility model content
The purpose of the utility model is to avoid weak point of the prior art and provides a kind of sealability in the high-temperature flue gas operating mode better, and heat exchange efficiency is high, the assembly welding plate-fin air preheater of lightweight construction.
The purpose of the utility model realizes through following technical scheme:
A kind of assembly welding plate-fin air preheater is provided; Include housing, smoke inlet, exhanst gas outlet, air intake, air outlet slit; And be arranged at heat exchange element and the hermetically-sealed construction in the said housing; Wherein, Said heat exchange element includes a plurality of plate wing heat exchange units, the fin that said plate wing heat exchange unit includes thin plate and is welded in said thin plate both sides respectively, and said plate wing heat exchange unit is by the settings of two relative said thin plates alignment snappings, and respectively through the be tightly connected sealing surface of its end, edge of sealing bolt and/or weld seam.
Wherein, it is one-body molded to be arranged at the inboard fin of two said thin plates in the said plate wing heat exchange unit.
Wherein, be arranged at being welded and fused of the inboard fin of two said thin plates in the said plate wing heat exchange unit away from the mutual correspondence of said thin plate one side.
Wherein, said thin plate is the thin plate with smooth surface.
Wherein, said thin plate is the thin plate with rough tread.
Wherein, said gauge of sheet is 1mm～3mm.
Wherein, said gauge of sheet is 2.5mm.
Wherein, be provided with sealing gasket between the sealing surface of end, said two thin plate edges.
Wherein, said fin is straight fins and/or oblique fin.
Wherein, said fin is set to any fin in triangular laminated structure, arc laminated structure, cylindrical-shaped structure and the circular cone spike structure, perhaps the fin of two kinds or two or more combinations.
The beneficial effect of the utility model:
A kind of assembly welding plate-fin air preheater of the utility model; Include housing, smoke inlet, exhanst gas outlet, air intake, air outlet slit; And be arranged at heat exchange element and the hermetically-sealed construction in the housing; Wherein, Heat exchange element includes a plurality of plate wing heat exchange units, the fin that plate wing heat exchange unit includes thin plate and is welded in the thin plate both sides respectively, and plate wing heat exchange unit is by the settings of two relative thin plates alignment snappings, and respectively through the be tightly connected sealing surface of its end, edge of sealing bolt and/or weld seam.Compared with prior art; The problem of the sealability shortcoming during anti-big flow high-temperature flue gas that the utility model overcomes that the cast sheet wing regenerative air heater of prior art exists; Adopt fins set to be welded in the mode of thin plate, and sealing surface adopt the sealing means of sealing bolt and/or weld seam, the sealability when not only having improved high temperature resistant flue gas; But also increased its heat exchange efficiency, for the research and development of the plate wing heat exchange unit of the big flow of large tracts of land under the worst hot case and narrow gap provide technical foundation; Simultaneously, also alleviated construction weight.
Description of drawings
Utilize accompanying drawing that utility model is described further; But the embodiment in the accompanying drawing does not constitute any restriction to the utility model; For those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to following accompanying drawing.
Fig. 1 is the structural representation of a kind of cast sheet wing regenerative air heater of prior art.
Fig. 2 is the part-structure sketch map of plate wing heat exchange unit of embodiment 1 of a kind of assembly welding plate-fin air preheater of the utility model.
Fig. 3 is the part-structure sketch map of plate wing heat exchange unit of embodiment 2 of a kind of assembly welding plate-fin air preheater of the utility model.
Fig. 4 is the part-structure sketch map of plate wing heat exchange unit of embodiment 4 of a kind of assembly welding plate-fin air preheater of the utility model.
In Fig. 1, Fig. 2, Fig. 3 and Fig. 4, include:
1---smoke inlet, 2---housing,
3---heat exchange element, 31---thin plate, 32---fin, 33---sealing surface,
4---air outlet slit, 5---hermetically-sealed construction, 6---air intake, 7---exhanst gas outlet, 8---cover plate,
9---sealing gasket, 10---sealing bolt, 11---weld seams.
The specific embodiment
In conjunction with following examples the utility model is further described.
One of specific embodiment of a kind of assembly welding plate-fin air preheater of the utility model; As shown in Figure 1; Include housing 2, smoke inlet 1, exhanst gas outlet 7, air intake 6, air outlet slit 4, and be arranged at heat exchange element 3 and hermetically-sealed construction 5 in the housing 2.Above-mentioned technical characterictic is identical with the structure of cast sheet wing regenerative air heater of the prior art.
The improvements of the utility model are: as shown in Figure 2; Heat exchange element 3 includes a plurality of plate wing heat exchange units; The fin 32 that plate wing heat exchange unit includes thin plate 31 and is welded in thin plate 31 both sides respectively, plate wing heat exchange unit is by the settings of two relative thin plates 31 alignment snapping, and respectively through the be tightly connected sealing surface 33 of its end, edge of sealing bolt 10.The material of thin plate 31 is a steel plate; Two thin plates 31 of plate wing heat exchange unit constitute a plate wing heat exchange unit through the be tightly connected sealing surface 33 at its two ends of sealing bolt 10; A plurality of plate wing heat exchange units link together and constitute the heat exchange element module, and several heat exchange element module groups are dressed up an assembly welding plate-fin air preheater.
Compared with prior art; The problem of the sealability shortcoming during anti-big flow high-temperature flue gas that present embodiment has overcome that the cast sheet wing regenerative air heater of prior art exists; Adopt fin 32 assembly weldings in the mode of thin plate 31, sealing bolt 10 its sealing surface 33 that is tightly connected simultaneously, the sealability when not only having improved high temperature resistant flue gas; But also increased its heat exchange efficiency, for the research and development of the plate wing heat exchange unit of the big flow of large tracts of land under the worst hot case and narrow gap provide technical foundation; Simultaneously, also alleviated construction weight.
Concrete, the thickness of thin plate 31 is 1mm～3mm.Because the thinner thickness of thin plate 31, therefore, the heat transfer of the assembly welding plate-fin air preheater of the utility model is fast, and heat exchange efficiency is high.
Concrete, thin plate 31 has smooth surface or has rough tread.In order to strengthen the rigidity of thin plate 31; And improve the turbulent flow that gas flows through thin plate 31 surfaces, can be employed in rough decorative pattern is set on the thin plate 31, further; Thin plate 31 lip-deep decorative patterns and arrangement pattern thereof also can be diversified; Comprise salient point, concave point, spike-tooth, pin hole, ripple, band, twill, straight burr, prismatic, fancy etc., and the various combinations between them.
Concrete, be provided with sealing gasket 9 between the sealing surface 33 of end, two thin plate 31 edges.Sealing effectiveness is better, and sealing gasket 9 is arranged at the position near sealing bolt 10.
Concrete, fin 32 is straight fins and/or oblique fin.Be that fin 32 can be the combination fin 32 of straight fins, oblique fin and straight fins and oblique fin.Tiltedly fin is compared with straight fins, has increased the heat exchange area of fin 32, thereby has further increased heat exchange efficiency.Preferably, the acute angle that tiltedly is provided with between fin and the thin plate 31
θAngle can be 35 °～80 °.
Concrete, fin 32 is set to any fin 32 in triangular laminated structure, arc laminated structure, cylindrical-shaped structure and the circular cone spike structure, perhaps the fin 32 of two kinds or two or more combinations.
The manufacturing approach of the plate wing heat exchange unit in a kind of assembly welding plate-fin air preheater of the utility model includes following steps:
Make fin 32 and thin plate 31 at first, respectively.Arrange the good several rows of fin 32 of clamping according to designing requirement.
Secondly, assembling fin 32 navigates to thin plate 31.32 rows are layered on the assembly welding platform fin, cover thin plate 31, on thin plate 31, spread another layer fin row again, three hierarchical relationships of having good positioning.
The 3rd, when the upper/lower electrode frock compresses three part layers, utilize electric resistance welding to weld thin plate 31 and its fin of fitting up and down 32 simultaneously.
The 4th, monolithic thin plate 31 is carried out leakage check and secondary process, improve quality of fit, with anti-leak.
The 5th, plate wing heat exchange unit of two thin plates, 31 assemblings.Be supported in fast thin plate 31 horizontal positioned on about 1 meter high framework platform earlier, load onto sealing gasket 9 near the position between the other sealing surface 33 in sealing bolt 10 holes of its both sides.
The 6th, snap onto another piece thin plate 31 on the last thin plate 31, the sealing surface 33 of centering both sides tightens the sealing bolt 10 of thin plate 31 both sides.
The 7th, on the special frock that is provided with, carry out a property detection of oozing of cell body, sealing surface 33 is carried out air seal test, carry out the static withstand voltage test of normal temperature after qualified, simulate the dynamic test of worst hot case at last.
The utility model can be used in the smoke pre-heating recovery system of the newly-built or all kinds of devices transformed of oil plant; Structural principle that it is new and manufacturing technology overcome the cast sheet wing regenerative air heater shortcoming of prior art; And cleaning and maintenance cost have been reduced; Have bigger economic benefit, be convenient to large-area popularizing and popularization on the market.
embodiment 2.
Two of the specific embodiment of a kind of assembly welding plate-fin air preheater of the utility model; As shown in Figure 3, the main technical schemes of present embodiment is identical with embodiment 1, in the present embodiment unaccounted characteristic; Adopt the explanation among the embodiment 1, no longer give unnecessary details at this.The difference of present embodiment and embodiment 1 is, plate wing heat exchange unit is by the 31 alignment snapping settings of two thin plates, and respectively through weld seam 11, rather than the be tightly connected sealing surface 33 of its end, edge of sealing bolt 10.The relatively poor problem of sealability during high temperature resistant flue gas that present embodiment overcomes that the cast sheet wing regenerative air heater of prior art exists; Adopt fin 32 assembly weldings in the mode of thin plate 31; Weld seam 11 its sealing surface 33 that is tightly connected simultaneously; Sealability when not only having improved high temperature resistant flue gas, but also increased its heat exchange efficiency is for the research and development of the plate wing heat exchange unit of the big flow of large tracts of land under the worst hot case and narrow gap provide technical foundation; Simultaneously, also alleviated construction weight.
embodiment 3.
Three of the specific embodiment of a kind of assembly welding plate-fin air preheater of the utility model, the main technical schemes of present embodiment is identical with embodiment 1, and unaccounted characteristic adopts the explanation among the embodiment 1 in the present embodiment, no longer gives unnecessary details at this.The difference of present embodiment and embodiment 1 is, plate wing heat exchange unit is by the 31 alignment snapping settings of two thin plates, and respectively through the be tightly connected sealing surface 33 of its end, edge of weld seam 11 and sealing bolt 10.The relatively poor problem of sealability during high temperature resistant flue gas that present embodiment overcomes that the cast sheet wing regenerative air heater of prior art exists; Adopt fin 32 assembly weldings in the mode of thin plate 31; Sealing bolt 10 and weld seam 11 its sealing surface 33 that is tightly connected simultaneously; Sealability when not only having improved high temperature resistant flue gas, but also increased its heat exchange efficiency is for the research and development of the plate wing heat exchange unit of the big flow of large tracts of land under the worst hot case and narrow gap provide technical foundation; Simultaneously, also alleviated construction weight.
embodiment 4.
Four of the specific embodiment of a kind of assembly welding plate-fin air preheater of the utility model; As shown in Figure 4, the main technical schemes of present embodiment is identical with embodiment 2, in the present embodiment unaccounted characteristic; Adopt the explanation among the embodiment 2, no longer give unnecessary details at this.The difference of present embodiment and embodiment 2 is that the fin 32 that is arranged at two thin plates, 31 inboards in the plate wing heat exchange unit is one-body molded.Also improved the structural strength of plate wing heat exchange unit when strengthening sealing.
Five of the specific embodiment of a kind of assembly welding plate-fin air preheater of the utility model, the main technical schemes of present embodiment is identical with embodiment 4, and unaccounted characteristic adopts the explanation among the embodiment 4 in the present embodiment, no longer gives unnecessary details at this.The difference of present embodiment and embodiment 4 is, is arranged at being welded and fused away from the mutual correspondence of thin plate 31 1 sides of the inboard fin 32 of two thin plates 31 in the plate wing heat exchange unit.
Should be noted that at last; Above embodiment is only in order to explain the technical scheme of the utility model; But not to the restriction of the utility model protection domain, although with reference to preferred embodiment the utility model has been done explanation at length, those of ordinary skill in the art is to be understood that; Can make amendment or be equal to replacement the technical scheme of the utility model, and not break away from the essence and the scope of the utility model technical scheme.
Claims (10)
1. assembly welding plate-fin air preheater; Include housing, smoke inlet, exhanst gas outlet, air intake, air outlet slit; And be arranged at heat exchange element and the hermetically-sealed construction in the said housing; It is characterized in that: said heat exchange element includes a plurality of plate wing heat exchange units; The fin that said plate wing heat exchange unit includes thin plate and is welded in said thin plate both sides respectively, said plate wing heat exchange unit is by the settings of two relative said thin plates alignment snappings, and respectively through the be tightly connected sealing surface of its end, edge of sealing bolt and/or weld seam.
2. a kind of assembly welding plate-fin air preheater according to claim 1 is characterized in that: the fin that is arranged at two said thin plate inboards in the said plate wing heat exchange unit is one-body molded.
3. a kind of assembly welding plate-fin air preheater according to claim 2 is characterized in that: be arranged at being welded and fused away from the mutual correspondence of said thin plate one side of the inboard fin of two said thin plates in the said plate wing heat exchange unit.
4. a kind of assembly welding plate-fin air preheater according to claim 1, it is characterized in that: said thin plate is the thin plate with smooth surface.
5. a kind of assembly welding plate-fin air preheater according to claim 1, it is characterized in that: said thin plate is the thin plate with rough tread.
6. according to any described a kind of assembly welding plate-fin air preheater in the claim 1 to 5, it is characterized in that: said gauge of sheet is 1mm～3mm.
7. a kind of assembly welding plate-fin air preheater according to claim 6, it is characterized in that: said gauge of sheet is 2.5mm.
8. a kind of assembly welding plate-fin air preheater according to claim 6 is characterized in that: be provided with sealing gasket between the sealing surface of end, said two thin plate edges.
9. a kind of assembly welding plate-fin air preheater according to claim 1 is characterized in that: said fin is straight fins and/or oblique fin.
10. a kind of assembly welding plate-fin air preheater according to claim 1; It is characterized in that: said fin is set to any fin in triangular laminated structure, arc laminated structure, cylindrical-shaped structure and the circular cone spike structure, perhaps the fin of two kinds or two or more combinations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203674756U CN202254977U (en) | 2011-09-30 | 2011-09-30 | Installed and welded plate-fin air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203674756U CN202254977U (en) | 2011-09-30 | 2011-09-30 | Installed and welded plate-fin air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202254977U true CN202254977U (en) | 2012-05-30 |
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ID=46116207
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203674756U Expired - Lifetime CN202254977U (en) | 2011-09-30 | 2011-09-30 | Installed and welded plate-fin air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202254977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313469A (en) * | 2011-09-30 | 2012-01-11 | 茂名重力石化机械制造有限公司 | Assembled and welded plate fin type air preheater |
| CN103353125A (en) * | 2013-07-23 | 2013-10-16 | 茂名重力石化机械制造有限公司 | Baffling fin casting plate-type air pre-heater |
-
2011
- 2011-09-30 CN CN2011203674756U patent/CN202254977U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313469A (en) * | 2011-09-30 | 2012-01-11 | 茂名重力石化机械制造有限公司 | Assembled and welded plate fin type air preheater |
| CN103353125A (en) * | 2013-07-23 | 2013-10-16 | 茂名重力石化机械制造有限公司 | Baffling fin casting plate-type air pre-heater |
| CN103353125B (en) * | 2013-07-23 | 2016-07-06 | 茂名重力石化机械制造有限公司 | A kind of baffling wing cast sheet regenerative air heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 525024 Guangdong City, Maoming Province Ring West Road, No. 91 Patentee after: Maoming gravity Petrochemical Equipment Co Ltd Address before: 525024 Maoming City, Guangdong Province West Road, Maoming City, the gravity of the Petrochemical Machinery Manufacturing Co., Ltd., Patentee before: The Challenge Petrochemical Machinery Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |